Nisini, B;
Lorenzetti, D;
Cohen, M;
Ceccarelli, C;
Giannini, T;
Liseau, R;
Molinari, S;
... White, GJ; + view all
(1996)
LWS-spectroscopy of Herbig Haro objects and molecular outflows in the Cha II dark cloud.
Astronomy & Astrophysics
, 315
L321-L324.
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Abstract
We present the first far infrared spectra of the Herbig Haro objects HH 52-53-54 and of IRAS 12496-7650, all located in the nearby star forming region known as Chamaleon II dark cloud, obtained with the Long Wavelength Spectrometer (LWS) onboard the Infrared Space Observatory (ISO). The richest spectrum is found in HH 54, showing molecular transitions (CO with J_u_ from 19 to 14, water vapour mainly in its ortho form and OH) and low excitation fine structure lines ([OI]63, 145μm, [CII]158μm). In HH 52 and HH 53,only the [OI] and [CII] lines are detected. The LWS spectrum of IRAS 12496-7650 shows both fine structure and CO lines. The [CII]158μm line is ubiquitous in the region, as proved by its presence in all ISO pointings, including the raster scan maps. The fine structure lines are used to evaluate the physical parameters of the emitting regions. In particular, the mass loss rates of each outflow present in the region, are derived from the [OI]63μm line luminosity.
| Type: | Article |
|---|---|
| Title: | LWS-spectroscopy of Herbig Haro objects and molecular outflows in the Cha II dark cloud |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://ui.adsabs.harvard.edu/abs/1996A%26A...315L... |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, stars, formation, stars, individual, IRAS 12496-7650, ISM, jets and outflows, ISRI, individual objects, HH52,53,54, infrared, ISM, lines, PHOTODISSOCIATION REGIONS, EXCITING STARS, AE STAR, EMISSION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10096127 |
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